Machine for winding cores



L. SCUSA 4 MACHINE FOR WINDING CORES uly 22 1924.

Filed Feb. 2, 1922 Patented July 22, 1924.

um'rao sr LINO SCUSA, OF PHOENIX, NEW Y0.

MACHINE FOR WINDING com.

Application filed February 2, 1922. Serial No. {$8,504.

To all whom it may concern:

Be it known that I, LINO Sousa, a citizen of the United States, residing at Phoenix, in the county of Oswego and State of New York, have invented certain new and useful Improvements ,in Machines for Winding Cores, of which the following is a specification.

This invention relates to means for winding the hollow cores upon which toilet paper is wound.

The primary object of the invention is to manufacture hollow cores of the class from a continuous web or strip of paper. A further object is to provide novel and simple means for slittin the relatively broad web of paper into a large number of strips or sheets from which a plurality of cores may be produced simultaneously. ject is to provide means for cutting the strips to equal lengths and for simultane: ously feeding the sheets towards the mechanism that effects the winding of the cores. A further object is to provide novel means for automatically forming the strips or sheets of paper into hollow cylindrical rolls. And a further object is to provide novel means for pasting the cores. Q

This invention relates particularly to improvements in the core winding mechanism shown and described in my pending application, Serial #422,274, filed Nov. 6, 1920.

The various features and parts of the invention will be understood from the detailed description which follows and by reference to the accompanying drawing, in whicha Figure 1 is a top plan view of thecore winding mechanism. Fig. 2' is a vertical longitudinal section taken on line 22 of Fig. 1. Fig. 3 is a detailed view of the means for driving the core winding mandrel. Fig. 4 is a detailed View showing a core partially wound. And Fig.5 is a broken View showing several of the sheets or strips of paper slitted and out ready for winding.

In the drawing, 22' represent similar spaced frame sections, which support the core winding mechanism. 3 represents a shaft which supports a roll comprising a continuous web or strip of heavy paper or card-board 4 of the kind suitable for mak-. ing the cores upon which toilet-paper is wound. The shaft 3 is loosely journalled in bearings 2", of similar arms 2", which may be integral parts of the frame 2 2'.

A further obare disposed one above the other, and their opposite ends are journalled in the frames 22. Just outside of the-frame section 2, the shafts are fitted with similar spur-gears 55 the former driving the latter, and to the outer end of shaft 5 is fitted a pulley 5, which may be driven by a belt (not shown), in the usual manner. The feedrolls 55 are provided with circular knives 5, which shear and slit the web 4 longitudinally into a number of strips 4 of equal breadth, while the said rolls feed the web towards the point where the cores are wound. In constructing and assembling the machine, the number of rolls 5-5 correspond to the number of slits 5, and the transverse axes of the said rolls therefor align with the said slits. After the web 4 is slitted, the several strips continue to move forward simultaneously in the same direction, and are supported by a substantially horizontal table 4, which tends to hold all of the strips in the same plane. The means for winding the strips 4' into hollow cores, in the present showing, consists of a plurality of similar mandrels 66'-6, which are rotatably supported by arms 7 of a reel 7, the latter being journalled on a shaft 7 which in turn is journalled in the frame sections 22. The reel 7 is rotatable by the operator who attends the machine, for successively bringing these mandrels into the core-winding position indicated at 6, the direction of rotation being indicated by the dotted arrows in Fig. 2. As each mandrel is moved into the core-winding position, a projecting end (i of the mandrel passes between fingers or lugs 8 of a driving-head 8 (see Figs. 1 and 3), and 1S ,driven thereby in the direction of the small arrows in Figs. 2, 3 and 4 while winding the cores. The head 8 is mounted on a shaft 8', which may be rotated by any suitable power and at any suitable speed, but the rotation of the mandrels is necessarily intermittent, for allowing the reel tocbe rotated step-bystep, for successively bringing the several mandrels into the core-winding position, where they remain during the intervals of the winding. Each mandrel 6 1s provided with a longitudinal groove 6,

which, as the mandrel is brought into the windin position referred to, faces and is prefera ly disposed substantially in the same plane as the core strips on the table 4 (see Fig. 2). Upon arriving at the winding position, each mandrel is held stationary until the forward ends 4 of the strips 4' are simultaneously fed into the groove 6. At the instant the' strips enter the said oove, the knives 5 carried by the rolls 5-5, out the strips 4' into similar sheets 4 (see Fig. 5), which are the right length to make up the hollow cores 4*. The strips 41 are cut ofl' by knives 5 carried by the drum-like feed rolls 5, once each revolution of the said rolls, which are of such diameter that their circumferential measurement equals the length of the core blanks 4, when the said hiives enter grooves 5 formed in the lower rolls 5, as shown in Figure 2. The grooves 6 of the mandrels aresuflicient- 1% narrow to frictionally grip the ends of t e sheets 4, and hold them from release during the initial winding operation. It will be noted that the rear end of the table 4: is deflected upwardly toward the grooves 6 so as to guide the web thereinto. As soon as the sheets 4 enter the groove 6, the mandrel begins to rotate in the direction of the small arrows in Figs. 2 and 4, and by the time the mandrel has made one-half turn, the forward ends 42 of all of the sheets are formed into similar hooks 46 which prevent the accidental release of the sheets, and at the same time facilitates the close, true and tight winding of the same upon the mandrels. To still further render the winding of the sheets 4 more compact and positive, ll provide a plurality of shoes 9, which ride on the top surface of the mandrels, the said shoes being held in frictional engage ment with the mandrels and also with the cores 4 and exerting a certain pressure by the tension of springs 9 (see Figs. 2 and 4). The springs 9 are preferably mounted on a common rod 9, which is supported by the frame sections 2- 2. lit is customary to wind the sheets a, three or four times around the mandrels, and as the final turn is about to be completed, the free ends 4: of the sheets, spring away from the mandrels to the extent allowed by the rod 9 (see dotted lines in Fig. 2). Practically at the same instant that the ends 4 of the core sheets at strike the rod 9*, a series of paste brushes 10, one for each core, supported by a rockshaft 10', are swung upwardly by a suitable actuating mechanism (not shown) out of a tray 10 which contains a quantity of glue or paste, and apply the adhesive to the inner surface of the endst (see Fig. 2). Mechanism for operating the brushes 10 is shown in my prior Patent $1,421,? 30. The brushes 10 then gravitate to the tray 10 and the free ends 4 are then rolled up and brought isomer to a stop beneath the shoes 9, where they are allowed to remain long enough for the adhesive to set, before the reel 7 is rotated another step, for moving the core-laden mandrel 6 towards the toilet paper winding position (occupied by the mandrel 6"), and the bringing of the mandrel 6 into the core winding position, and so on.

When my present invention is employed in connection with the automatic toiletpaper winders, shown and described in my pending application referred to, the several mandrels are successively brought to the core-winding position shown at 6, by the step-by-step movements of the reel 7, in the direction indicated by the dotted arrows in 2, for winding the cores. After a set of the cores 4* are wound, the reel 7 is rotated one-third of a turn, which moves the core-laden mandrel into the position 6, where the toilet-paper (not shown) is wound upon the cores, while another mandrel is winding fresh cores. When the reel is next moved one-third of a turn, the toiletpaper rolls are moved to the position 6, the second core-laden mandrel is brought to the paper-winding position at 6, and the third mandrel is moved to the core-winding position, and so on. As each mandrel is moved to the position 6, labels (not shown) are applied to the paper rolls, and these rolls with their cores are then stripped from the mandrel before it is advanced to the position 6, for winding the next set of cores.

It is obvious that the novel means I employ for simultaneously feeding the continuous Web of the core-board, and for slitting and cutting the said web intoa large number of narrow strips or sheets of equal size from which a plurality of the cores are simultaneously made, may be combined with various other core-winding mechanisms, and it therefor do not wish to be limited to the use of the reel 7, and related parts.

The core-stock feeding, slitting, and wind ing mechanism, herein shown and described is extremely simple, it is substantially automatic, and it effects a great economy in the manufacture of cores and similar articles of the class.

Having thus described my invention what I claim, is

1. In a machine for making hollow cores from a continuous web of stock, a pair of feed rollers for the web, means for slitting said web while it is passing between said rollers for providing a number of similar strips, a table for supporting said strips in a common plane while the strips are being moved towards the core winding position, a mandrel having a longitudinal groove disposed in the path of the forwardly moving strips, means for cutting said strips transversely into elongated sheets simultaneously with the entry of the forward ends of the lit) mower drawn through said rollers for providing a number of similar strips, a table for supporting said strips, a mandrel journalled in said frame in the path of said strips said mandrel having a groove adapted to receive and grip the free ends of said strip, means for rotating said mandrel for winding the hollow cores, and means for cutting said strips into elongated sheets of equal length in advance of each winding operation.

3. In a machine for making hollow cores,

a frame, a pair of feed rollers journalled in said frame for feeding a continuous web of core-stock therebetween, means carried by said rollers for continuously slitting said web, means carried by said rollers for cutting the slitted ortions of said web into elongated sheets 0 equal length, at the end of each revolution of the feed rollers, a mandrel for simultaneously winding all of the sheets produced by one cutting operation into hollow cores, said mandrel having a longitudinal groove, a table for supportlng said sheets while they move from sald rollers towards said mandrel, said table adapted to guide theforward ends of said sheets into said groove, and means for applying an adhesive to the latter ends of said sheets.v

4. In a core winder, the combination with a frame having bearings at one end, a pair of shafts journalled one above the other in said frame, a plurality of similar registering feed rollers supported by the shafts for guiding and feeding a web of stock towards the core winding position, a winding shaft journalled in said frame parallel'to the said rollers, said shaft having a longitudinal groove whose length substantially equals the breadth of said web, means carried by said rollers adapted to slit ,said web into a number of similar strips, 2. table for supporting said strips adapted for guiding the forward ends thereof into the groove of said shaft, means for' cutting said strips into elongated sheets whose length substantially equalsthe distance between said rollers and said shaft, the cutting of saidsheets being timed to the entry of their free ends into the groove of said shaft, and means for rotating said shaft for simultaneously winding the several sheets into hollow cores.

5. In a core winding machine, a frame, a pair. of shafts journalled one above the other in said frame, means for driving said shafts in unison, rollers mounted on the shafts, a circular slitting member on each roller for slitting a web of stock fed between the. rollers into a plurality of strips, a

slotted mandrel adapted for simultaneously windin *said strips into hollow cores, means forgui ing the free ends of said strips into the slot of said mandrel, means for rotating the mandrel, and means for cuttin said strips into sheets of equal length in a Vance of thestarting of said mandrel.

6. In a core winder, the combination with a frame, of a pair of shafts journalled in said frame, means for driving said shafts in equal time, rollers carried by said shafts for feeding a Web of stock, means carried by said rollers for longitudinally slitting I said web into a plurality of strips, knives carried by said )rollers for cutting said strips transversely into elongated sheets from which the individual cores are made, a table for supporting said sheets after they leave said rollers, a mandrel journalled for rotationin a plane paralled to said shafts and said rolls, said mandrel adapted to grip the free ends of said sheets as they are simultaneously fed across said table by said 'rollers, means for rotating; said mandrel for winding said sheets into ollow cores while other strips are being formed by said slitting means, and means for applying an adhesive to said sheets during each winding operation.

7 In a core winder, a frame, a pair of shafts journalled in the frame, a table disposed adjacent saidshafts, rollers carried by said shafts for feeding a. web of stock towards said table, circular knives carried by said rollers for continuously slitting said web into a number of similar strips which are simultaneously fed across the table by said said table, said mandrel being arranged to receive and grip theforward ends of the strips, means carried by said rollers for cutting said strips into sheets from which the individual cores are made, means for rotatin said mandrel a limited number of turns u ring the winding operation, means for applying an adhesive to the sheets at the close of the winding operation, and tension means for holding the pasted ends of said sheets while the adhesive is setting.

8.'A core winding machine comprising web feeding means, a mandrel having a peripheral opening'to receive one edge of the web, an interposed table for supporting and guiding the web, means for tensionm the web while being wound on the mandre a support for the tensioning means, and adhesive applying means co-operating with the support to apply an adhesive to the strip.

In testimony whereof I aflix my signature.

LINO SOUSA. 

